#include <iostream>
using namespace std;
int main(){
    int a,b;
    char c;
    cin >> a >> c >> b;
    if( c == '+') cout << a + b;
    if( c == '-') cout << a - b;
    if( c == '*') cout << a * b;
    if( c == '/') cout << a / b;
    if( c == '%') cout << a % b;
    return 0;
}